光通信技术2018，Vol.42Issue(2)：31-34,4.DOI:10.13921/j.cnki.issn1002-5561.2018.02.009
高灵敏温度自补偿折射率传感器的研究
Research on temperature self compensated high sensitivity refractive index sensor
摘要
Abstract
This paper puts forward such a kind of environmental optical fiber refractive index (RI) sensor which the sensing system is based on the overlapping cascade long-period fiber grating,and it can provide tem-perature self compensation during measurement.Though finding specific grating period,it can make the reso-nant wavelength of loss peak which was coupled out by the cladding mode including order 9 and order 11 in the cascade, and the drifting of wavelength that has an opposed direction with the changes of outside refractive index, demodulating the index of refraction with their relative drift. The emulation shows that, making com-parison with the normal sensor of temperature compensation refractive index, the sensitivity of refractive in-dex has an obvious improvement, so it has a better practicability.关键词
重叠级联长周期光纤光栅/折射率传感/温度自补偿/高灵敏度Key words
overlap cascaded long period fiber grating/refractive index sensing/temperature self compensa-tion/high sensitivity分类
信息技术与安全科学引用本文复制引用
何其睿,葛海波,刘睿..高灵敏温度自补偿折射率传感器的研究[J].光通信技术,2018,42(2):31-34,4.基金项目
陕西省自然科学研究基金项目(2011JM8038)资助. （2011JM8038）
